Hello, this is my tldr about a little company of mine. I teach chess to little kids, I and some of my employees. We pride ourselves as a number 1 company here. Our price are a lot higher, but I am simply better about marketing than all of them(chess players can be really...rude sometime, that is very bad for business).

Now onto the problem, I am creating a tool for marketing and brand loyalty. I create a video for my students, a video of me reviewing their game and pointing our their mistake, I received pretty good feedbacks, but a friend(more like aquantance) of mine who is a straight up GrandMaster, tell me I was very wrong and criticise it heavily. Which is actually right from the perspective of a chess player. She is actually a lot better than me in term of playing chess(ya know, GrandMaster).

Could I hire a GrandMaster to teach for me? Yes I can, but they are not very good for business. Like I said, they can be really rude, their schedule are very tight, which is really bad too. And their absurb knowlegde can be impressive, but it is not a requirement for teaching kids.

So in one hand, my new marketing strategy can be very effective, but it can face backlash heavily on Facebook(my main platform) by high ranking chess players! Some of them are my competitors.

So, should I go on with this? Should I just block everyone of them competitors? I was big, but not that huge, this strategy can win me big time, but it can create a big backlash too.

Tldr: Create personal chess couching videos for kids as a reward. I can potentially get really big, but can face huge backlash from very high elo chess community such as IM and GM, which have not many people, but a lot of them are my competitors.

So it sounds like you're the best in the space and people expect the best in the space to be the best. It seems like you're doing a good job and interestingly it sounds like you could be even better - further separating you from the competition.

Your job as an entrepreneur is often to figure out how to combine two very unrelated things. In your case, I see a huge upside to hiring a grand master. It lends tons of credibility to your service. The challenge as an entrepreneur is to make sure that you can combine the expertise of the grand master with an exceptional user experience. This is something that neither you or the grand master can do on your own.

Here's what I see being a really good business model:

Your clients play chess

You have a grand master review/analyze their play (this person lends their expertise)

Don't send the grand master's review directly. Instead you use it prepare a video that you or your staff make.

You client receives a video based directly on the grand masters feedback but explained by someone a bit more amicable.

Well no, their parent are my customers, I want to create some materials for them to learn. I already charge a hefty amount to couch them, I want to use the vid to promote my page and create brand loyalty.

Sounds like you're offering an inferior service than your competitors (because they're grandmasters and you're not) but you have better business sense so youre able to charge more. By making videos of your teaching public and open to criticism from people that are experts in your field and have reason to criticize (increase their business by pointing out your flaws) you're making yourself vulnerable. I don't think opening yourself and your business up to expert critics who are also competition in a public forum is a good idea business wise.